Gas prices are up again today. Regular self serve is selling at South Shore pumps for $1.30.1 per litre. That's an increase of just over a cent. High test has gone up by a similar amount to $1.39 per litre. Diesel has also increased in price to $1.30.8. That is about 1.5 cents higher than yesterday. Gas prices in the Halifax area are traditionally about half a cent lower than those on the South Shore.